Kappstein E-Mobility

B3 - REAR HUB MOTOR

With the goal of developing an extremely lightweight and above all compact wheel hub motor, Kappstein is introducing the new B3 motor weighing just 2.5 kg and with the diameter of a geared hub, this powerful lightweight is designed as a direct drive, making it much quieter than standard geared motors and providing a very smooth riding performance.

As a special highlight and despite its compact size, the motor features an internal controller and torque sensor. It’s at its best when combined with Kappstein’s Doppio CX bottom-bracket drive system. This enables the construction of an extremely lightweight electric bike with two or more gears using very compact and intelligently designed components. It also sets new standards in e-mobility, especially in terms of performance and innovative content. The motor is suitable for both chain- and belt-driven bikes. It’s maintenance-free, permits 9-spline mounting for a cassette or sprocket, and excels with superior heat dissipation.

SPEZIFICATIONS

Type: BLDC direct drive motor
Nominal capicity: 250W
Maximum output: 400W
Voltage: 36V
Torque: 25Nm
Efficiency: 86%
Torque sensor: internal
Controller: internal
Communication: various options

 


Spokes: 28, 32, 36
Diameter: 110mm
Weight: 2.6kg
Performance: smooth running
Axle: M10, thru axle
Brake: 6-bolt adapter 
Miscellaneous: no screws, clean look, internal heat sensor

The B3 is the evolution of the KA Classic motor which in the early 2000s was one of the first BLDC motors in the European market. The majority of ebikes in the European market were equipped with this motor at the time which was distributed under the Toprun brand. Already then it was ahead of its time with an internal controller and torque sensor.

KA CLASSIC - REAR HUB MOTOR

The KA Classic is Kappstein’s entry level motor for a high quality urban or city bike. The KA Classic (250 W, 36 V) is a high quality 40 Nm direct drive motor with an integrated motor controller and torque sensor. This makes the system compact, maintenancefree and easy to use. Furthermore, the motor provides an exceptionally smooth ride experience with a weight of only 4.2 kg. The KA Classic is the evolution of the Toprun system which has been one of the rearmotor pioneers with systems supplied to the European market in large quantities already from the early 2000s onwards.

SPECIFICATIONS

Nominal capicity: 250W
Nominal voltage: 36V
Torque: 40Nm
Efficiency: 85%
Torque sensor: internal
Controlller: internal
Communication: U-ART
O.L.D.: 135mm, 150mm
Spokes: 28, 32, 36

 


Axle: M10, bolt on, QR
Brake: 6-bolt adapter
Diameter: 168,5mm
Weight: 4.2kg
Protection class: IP55
Performance: smooth running
Miscellaneous: E-switch, silent freewheel

KA3S - REAR HUB MOTOR

This direct drive motor is based on the KA Classic and features the same highlights like the integrated controller and sensor as well as the smooth ride. Furthermore, it weighs in at only 4.9 kg and provides a clean look as no visible bolts are used on the outer casing. The KA3S is suitable for both chain- and belt-driven bikes. Combining the KA3S with the Kappstein Doppio bottom bracket drive system doubles the available gears to six, making it optimal for nearly any terrain.

SPECIFICATIONS

Type: BLDC direct drive motor
Gear ratio: 1 : 1,391 : 1,843
Nominal capicity: 250W
Nominal voltage: 36V
Torque: 40Nm
Efficiency: 85%
Controller: internal
Torque sensor: internal
O.L.D.: 135mm, 150mm

 


Spokes: 28, 32, 36
Axle: M10, bolt on, QR
Brake: 6-bolt adapter
Diameter: 183mm
Weight: 4.9kg
Protection class: IP55
Performance: smooth running
Miscellaneous: internal 3-speed gearbox, silent freewheel, E-switch, no screws

 

AVAILABILITY

All drives being adapted for the OEM's as a serial engine and can not be retrofitted. The accommodation of the battery and optionally a display unit as well as the wiring is customized in cooperation with the customer for each model. You get an individual solution according to your wishes. We are open to any new project and see our strength above all in customer service and in our flexibility.

For further questions please do not hesitate to contact us: info@kappstein.de